Lighting and ignition switch



Sept. 18, 1928.

E. A. BOHLMAN LIGHTING AND IGNITION SWITCH 3 Sheets-Sheet 1 57 amp Filed NOV. 26. 1924 0r: esZfiEaZriman.

3 Sheets-Sheet 2 TIL/E27 I V a E. A. BOHLMAN LIGHTING AND IGNITION SWITCH Filed Nov. 26, 1924 Sept. 18, 1928.

Sept. 18, 1928.

E. A. BOHLMAN LIGHTING AND IGNITION SWITCH Filed Nov. 26, 1924 3 Sheets-Sheet 3 Patented Sept. 18, 1928.

UNITED STATES 1,684,940 PTENT QFFECE.

ERNEST A. BOHLMAN, OF CHICAGO, ILLINOIS, ASSIGNOR TO KELLOGG SWITCHBOARD ANTD SUPPLY COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF'ILLFNOIS.

IGHTING AND IGNITION SWITCH.

Application filed November 26, 1924; Serial No. 752,296

- My invention rclates to electrical switches in general and hasvto (lo more particularly with switches for=controlling a pluralityof circuits and the present embodiment of my invention isfonuse in connection' with igni- .tion'and lighting circuits for automobilesi'or theflikez: 1 11. ZI .f v

- It-is an object ofmy invention .to produce an;:improved-;'device of-the 'classdescribed which embodies-desirable: fea'tures and advantagesfall inafsimple and efficient manner, and a featilreof T y-invention isfthe provision o f novel means :=forassociating the actuating leversbf the lighting and ignition units of the switch ;-with; the -rot0r elements-of the lighting and ignition units, :against lateral movement a'nd tosecurethe rparts together whichcco'mpiise the rotor elements that form the rotatable units, which units'are held to getherwithout the aid-of complicated fasten- 'ingnmeanmsuch .asnuts and threaded members. a

Another feature of my invention is the provision of a'novel method of holding the rotor elementsof-the lighting and ignition units in their-different operative positions. and the means for producing a snap action of the rotor elementsas they are moved to their different operative positions. i

Another feature of my invention is the provision of a novel. contact arrangement sup ported in the base of the ignition. and lighting-switch which cooperates withthe wipers of theresp'ective rotor; elements, which elements when rotated cause said wipers'associated with the. rotorelements to engage the stationary contacts secured in the base of the switch i Still another feature of,-my=invention is the provision of an -:i nter.-changeahle cowl light unit and-horn abutton unit either of which may be associated ;with the switch without replacingparts. of the switch to I make the same adaptable for either the cowlunit or the horn unit, and the means for'using the same spring and contact icombination for both;

Another ,feature of 'myinvention is the method I provide for fastening the switch to the dash of the car. f

A still further-feature of my invention is the provision of means for carrying the fuses, both the fuse in use. and the reserve fuse The above features as well as others will be more fully hereinafter described, an :l for a 5 .Fig: 6 is a sectionaliview along'the'lirieMc -of Fig:4; I

.levcr of one of the switch 1n gs in 1 which lik'etreference charactersi in the several'views denote like parts;rand in-which;

the.- combination I switch ofmy; invention; F g. 2-is' aright sidelevatioii ,o ,Fig F g. 3 isa rear?iview:of;=Fig;ik;;i -1: Fig;;4 is an interior rearview of the 'meehxii-91am? 1 ig. 5 is :84 sideiviewrdffithdzrQarilbinutibn switch---.of my? i-nvejntionf with iparts hroken away to clearly: illustrate. the mechanism ;'-:1.; ZTi"\.- ;I 1: Fig.- 7 is a face'view ,ofjthebase illustrating the contactzarrange'ment ofthe, ignition:and light-in; units of the-switch; -.-,f

F1g.-;8 is ,a view of the interiorl mechanism, part of the apparatus fbeing removed-rte smOlB clearly-show the locking ;.arrang,em ent, the

switch units being at normal and unlocked Fig. 9 is a view similar-to Fig..-8 showing the locking mechanism in its opera'ted iposi- 10H; Fig. 10 is a rear-view; 'ofthe switch.}show- Inga protective relay: supported-onsthe :base in place of thefuse as illustrated in Fig, 3;

Fig. 11 is aright side elevation of; Fig.'-10; tvFig. 12 is a sectional view along the line 12'12 of Fig. 9; 1-1;;-

Fig.13 is a sectional view; of the'actuating units anditsassociated parts; v c. I -Y- 1 Fig. 14 is a sec-tional-viewof the cowl light .00 unit shaft; w

Figs; 15 and 16.ar e-partial sectional-views of oneof the studs which secures the -escutcheon supporting plate and enclosiug casing. together ,Fig. 15 showing the stud a te 1 the studhas beeninserted in position; to;- secure the plate member and casing t9ge the r 1 7 a. sectional view alongithe hne l'Z.170fF-ig.7;- i n- Fig. 18 is a sectional .viwiofthe horn but- :tonwrhich may be substituted in place ofthe cowl light unit and Fig. 19 is a disassembled perspec l Vi of the lever and. its associated p rt Referring now; inlgeueral to my -JHVQ QBF ,as illustrated in the accompanying dra g threeoperative positions B, Cand D which 1 switch amit .L when in these different opera tive posit-ions will c':ose circuits to eflec't the lighting of certain lamps of the automobile. The ignition switch unit Mhas .a normal .or (is ios'i tion E, in which, position the ignition appiiratus is rendered inoperative, and an operative position F. i-Vhen the;s -wi-tch unlit M is moved to its operative position F the ignition circuit is closed -;zu1d" isth-us rendered operative.

3-1 alswpnowide locking -mechanism-i which consists preferably of a pin tumbler cylinder type lock :Tywhich controls a plate nie mber S 'which as adajpted'to loclc'the {igniztion switch unit M'only in its ofi position E. The sliding lockingzplalte member S is also associated .with-the lighting-switch unit L and is adaptedtdfilodk the lighting switch ainit L iii its off position A and its first two operative position-s13 and G; 'lhelock lta nd sits'associated sliding lockingp late's are so arranged that t'he key o f'the lock T'cah only be remowediromthe cylinder of the tumbler loclc 5 when the switch uni-t M-is its off position and when the lighting ;unit I) is'in i't-s off position A or either-of its first twooperative positions B and G. The

key however, cannot'be removed wheni the ignition switch unit is in its ignition or position F o-r if the lighting swltch unitL'is n itspes'iti on'l), sothat should the operator attemptto reniolve the lreyjwhen the switch in-it M is in its position F he will be immediately apprised'of the fact that the ignition circuit is closed. If the operator has restoredthe ignition switch unit Mto its off position E and permits thedighting switelr'unit L'to remain inits position 1) in which the headlightsare burning and an attempt to remove the key from the lock T it will immediately apprise him of the fact that-the headlights are burning and that to remove the key the lighting switch unit L must be moved to either of itspositions A, B or C to permitthe 'r em'o'val' of the 'key from the lock- T.

Referring now more in detail tot'he switch of'my invention 1- will first describe the back structure of the same. The back structure comprises preferably a flat circular mounting diskor base 2 made of any suitableinsulat-ion material such asfibre orbakelite. A number ofsuitable contact members 3',4', 5, 6 7,

'8", 9, 10', 11 a'nd'12' are provided and are secured suitable slots 13 provided in the basel. 'Contaetmembers 3, 4' and 5"'are associated withthe ignition switch unit M and cont-acts 6, 7, 5,. 9. 10", 11 and '12. are

'li'ssociated with tlie' 'ligl1ting switchunit L. As eaelrone of the contact members is secured to the base in the same identical manner. a description of one which is typical of the others will suffice to give a clear understanding of the o.thers. Referring now to Fig/17 ndassmning forthe sake of explanation that the contact member shown is the contact member 5, it is stamped ,out of suitable conducting material such as brass. The base 2 which carries these contact members is provided with a slot 13 of .a size to receive the reduced portion of the contact member 5. T he reduced portion of the member 5 now being described is inserted in its respective slot 13 with the shoulders 14 and 1 1' formed :bythe reduced portion 5 when the member 5 is in position in the slot 13 resting against the face 2 of the base 2. The reduced portion ofthe member 5 protrudes slightly beyond the face 2 of the base-2 and-by. means of a suitable tool, this protr-uding pontion 'is shaped by means of a swagiiing' operation.

present andarc-uate portion 5 which. forms the contact {i -adapted to be engaged by the wipers W and" W associatedwitlr the confacts as wiljl'be inore fullyhereinafterdescribed. The-terminals 3'and 5 whidh extend up from the-face 2- of the base 2 at which the contacts Sa nd '5 are a portion, are provided to permit the connection of external conductors for which I providea suit-abletapped orifice 15 and suitable means having- 'screw threaded engagement with' the tapped orifice 15 to secure the external conductors to these terminal members 3 and 5. A terminal 16 secured to the base 2 in a manner already de scribed is provided'wi'th an integrally formed laterally extending portion 16 which is proyided with a depending member 4 which fits in a slot 13, and itsprotruding portion is shapedas already described'to form the contact f The terminal 16"i5 connected-with the contact 4' '--by this? laterally extending portion 16 which connects the contact 4' as sociated with the ignition-switch unit M to this terminal. 16 which is the-Battery terminal as will be more fully hereinafterdescribed;

The terminals 6', 7 and 10 which are-integrally formed with'the contacts 6", f7 and 10 extend up from the face 2' of the base Zand form terminals to which the external con ductors are secured as already described. The terminal 17 which is integrally formed with the contacts 8. and 9 'serves'as a-terminal for the contacts 8 andS) and the ter minal 18 which is integrally formed with the contacts 11' and'12 serves as a terminal for the contacts 11' and 12 andthese two terminals 17 and 18 form connecting means for the external conductors.

An enclosing casing for housing the rotor circuit closing elements K anal? associated respectively with the lighting unit L and the ignition unit M comprises a plate member 20 provided with a dished portion 20" which is adapted to receive an esc-utcheon or designating plate 21 which bears the names of the different. positions to which the ignltwn and lighting switch units L and M may be moved. A cup shaped member 22 is also provided, the bottom of which is provided with a pair of orifices and similar orifices in the plate member and the escutcheon plate 21 are in alignment therewith'and are adapted to receive ferrules 23 which secure the escutcheon plate 21 to the plate 20, and the means for'securing the plate 20 and casing 22 together to form a unit structure will be more fully hereinafter described.

The rotor circuit closing elements K and K which are provided'for the ignition and lighting switch units Land M are adapted to be rotatably supported within the cup shaped member 22, and as the rotor elements K and K are similarly constructed androtat-ably supported in a like manner 'afidescrip tion of one'will suflice. The rotor element K which is' associated with the lighting switch unitLcomprises a disk 25 which is supported betweentwo pair of spring arms 26, 27 and 30, 31, and these spring arms 26; 27 and 30; 31 in association with'the disk 25 are for purp oses as will pre sently be described.;'The

'ldisk 2'5 is provided witha square orifice 34, the side 35 0f thesq'uare orifice 34 being providedwitlr a notch 36, and an operating lever I associated withthe'rotor'eireuit closing element K tfor rotating the' 'same'is' provided with an integrallyformed lever shaft 38 -provided with "a cylindrical portion '39 whiclrwhen in position'rests in the ferrule opening of its associated unit. The lever shaft 38 is also provided with a square portion 40 next to the cylindrical portion 39 the said square portion 40 being of a size to permit entrance into the square orifice 34 of the disk The side 41 of the square portion 40 of the lever shaft 38 is providedwith an integrally formed. rib 42 which enters'the slot 36 in the side 35 of the square orifice 34 in the disk 25 and this slot 36 in association'with the rib 42 permits the lever shaft 38 to be inserted only one way so that the lever shaft 38 will he in its proper position to register with the indications on the esc'utcheon plate 21.

\Vith the lever 37 and its lever shaft 38 in position as just describedthe same may now be locked in position against lateral move- 11 .ment and tothis endiI provide a novel locking arrangement to prevent the lever shaft 38 from moving laterally in the ferrule 23 and square orifice 34 in the disk25. :Theportion of the lever shaft38 which protrudes through the disk 25 is provided with a reduced cylin (lrical portion 43 whichfis provided with a pair of integrally formed lugs 44 and 45 diametrically opposite, the face 46 of the respective lugs 44 and 45 being provided with ribs 4'? andl48, which cooperate with a cup shaped locking member 49 to Secure the lever shaft 38 against lateral mov'enmnt. The locking member49 is cup shaped i n form, the bottom of which is provided with a central oritice 59 and notches 51 and 52 in the orifice and '45 i on the lev'e 'l'ugsat and '45 aiid'peimit-i diametrically opposite each other which cooperate with the lugs 44 and 45 on the lever shaft 38. Notches 53 and 54 in the orifice 50 in the bottom of the cup shaped locking member 49 at right angles to the notches 51 and 52 cooperate with the "ribs 47I and 48 on the face 46 of the lugs 44 and 45 for purposes as will presently be described.

The unit structure which comprises the plate 20 escutcheon 21 and enclosing cup shaped member 22 which form thee'nelos'ing casing and the levers 37 and37 of the lighting and ignition switchiunits K and K when in position as 'just'described-are now's'upported in a. suitable fixture to support the same to facilitate assembly Now'with the lever 37 "of thfli'ghti'ng switclr unitf' L- in position, the cup shaped locking member 49 is. slipped over the"p rotruding" end off'th'e lever shaft 38"]and positioned* 'so-" tliatl the notches 51 an'dpein' the orifiee'50 o'f theme:- ing member 49 will register with Qth'e ln s' 44 i mi s-5% Test against the face. 56 of tli'eT-d'isjk 2'5 withthe reduced cylindrical portion- 43" of the? shat t 38 extendingintothe orifices 50 in the bottom of the. cup shaped locking member 49;"" The depth of the wall '57 of'thecup shaped'locklng member 49 isssubstantially equal to the space or distance between theface 56 "of the disk 25 and the: face 46 'olf'the l'u gs'44 and 45 on the lever shaft 38." VV'ith' the cup shaped locking member 49 in this position the same may now be moved to its locking position and for this purpose Iprovide asiiitable soeket wrench provided with a slightly tapered orifice and whiclrwre'nch is placed'overthe' cup shaped loeking inember. Downward pressure is now applied "to the socket wrench causing the wrench'to grip the cup member 49 and as the rim 5,5 of the locking cup member 49 rests against'th'e' face 56 of 'thewlisk 25 this downward pressure applied" onthe wrench force stlie disk 25 down on ;thc square portion 40 of the lever @shaft 38 causing the springarms 26, 27 and 30. 31' between which the disk 25 rests to be flexed. The cup-mem ber 49 is forced down until the face 58 of. the cup member 49 is below the ribs 47 and 48 on the lugs 44 and 45 and when in this position the cup member 49 may be turned in either a clockwise or counter clockwise direction a quarter of a turn through the agency of the wrench. The quarter of a turn of the cup shaped locking member 49 places the slots 53and 54 in the bottom of the locking member 49 in alignment with theribs 47 and48 on the lugs 14 and 45. Now when the locking member is in this position the pressure applied on the wrenca is released and the spring arms 26, 27 and 30, 31 which were flexed due iii to this downward pressure return to their normal position which ofcourse carries the disk 25 which is supported between the sprin g arms up and this upward movement causes the ribs 47 and 48 on the lugs 44 and to enter the notches 53 and 54 in the bottom face of the cup shaped locking member 49 \V-ith the cup shaped locking member 49 in this position the lever37is held orlocked in position against lateral movement in .the orifice 1n the ferrule 23 and orifice 34 in the disk 25 but th'elever 37 and its-associated disk 25 may be rotated to its different operative POSltiOitflS is readily apparentfrom the above description. a Therotor elements KandK with which the levers 37 and 37' are associated are adaptied-toberotated through the agency of t he levers 37 andv37 .to their di'iferent operative positions, and .to connect thecontact combinations of thevswitchunits and M to close particular circuitsin their difiepent operative positions. I provide, contact w per. carrying disks59 and 60 associated respectively with the lighting and ignitionswitch units L and M and as each of the wiper carrying disks59 and .60 is of similar construction, the description of one will sufiice. a.

The contact wiper carrying disk 59 associated with the lighting switch unit L comprises a disk 59 of suitable insulatingmaterialsuch as bakelite and upon which the wiper memberWis supported. The wiper member w comprises a ring shaped member 61-- provi ded .with three. .angularly displaced integrally formed tongueextensrons. 62 which are adapted toenterali ned orifices 63 in the disk-591 by; means iota ibrce fit to secure the same tothe disk :59 against displacement or movement,-- 'I;he.ring shaped member 61 is provided-with radiallydisposed wiper arms c.64,;65,-66 21 I1d ':67 and which are integrally formed therewith and which are provided with flared end port-ions64, 65, 66 and 67 which are adapted to engage the contacts 6', 7 etc. of the lighting switch unit L secured in thebase 2 as willbe more fully hereinafter described. To associate the disk 59 and its supported wiper arms 64, 65, 66 and 67 I provide a slot 68 inthedisk 59 which receives the integrally formed lugs 44 and 45 on the lever shaft 38 to support the disk 59 0nthe lever shaft 38. The slot 68 in association with the lugs 44 and 45 prevents movement of the disk 59 on the lever shaft 38. Now when the lever 37ismoved to any otits operative positions thejdisk 59 being supported as just described is rotated with the lever shaft 38 causing the wiper arms .64 65, 66- and 67 to engage the contacts 6,7 etc. of the lighting switch unit L in the jbase 2. The ignition switch unit is also provided with a disk 60 carrying wiper arms 70, 71, 72 and 73 which disk 60 when in position on the lever shaft 38 in a manner similar to that Just described in connection with the switch unit L is adapted to engage the contacts, 3', 4 etc. in the base 2.

In order to maintain the rotor elements K and K in the positions to which they may be moved I provide-a disk 25 associated with the rotor K, and a disk 25 associated with the rotor K and these disks 25 and 25 are supported on the lever shafts 38 and 38 ofthe respective levers 37 and 37 of the rotor elements K and K as before described and through the agency of suitable spring means hold the rotor elements K and K in their dit =fer ent operative positions as will now ,be de; scribed. A pair of plate,i'nenribgarsjfi and 76 each provided with four laterally extending arms. 26,- 27, 2s, and 29. and 30,311, '32 amiss. The rnembers 7 5 and 7-6 are placed in matched relation and secured in this position by means ofscrews 77 which passthrough suitable orificesin'thematched.nie mbers 7 5 and 7,6 and and 31, 28 and. 32, and 29 and 33, and these pairs of arms are formed to cause their free ends, to come in close pro ximitya ,Thus, the arms 26 and 30, and 27 and 31 of-the respective plate members and 76 cooperate, with the disk 25 of the rotor clement K and the arms 28 and and 29 and 33 of the respective plate members 75, and 7,6 cooperate with: the disk 25 associated with the rotor element K for purposes as will presently be described.

The disk 25 of the rotor element'K' and the disk 25 of the rotor element K when thus inserted between their associated pairs of arms, force the free ends thereof apart to place them under tension. The disks 25 and 25 are rovi'ded respectively with a plurality of orifices 80 and 81 which extend through the disks and the peripheral edges of the orifices 80 and 81 in the respective faces 80 and 80 and 81, 81 of the disks 25 and 25' are countersunk. The freeends of the pairs of arms 26 and 30 and 27 and 31 associated with the disk 25 of the rotor element K and the free ends of the pair of arms 28 and 32 and 29 and 33 associated with the disk 25 of the rotor element K are each provided with dished concave end portions which cooperate with the orifices 80 and 8]. in the disks 25 and 25. The. free ends of the pairs of arms between which the disk 25 of the rotor element Krests, align themselves with a pair of orifices 80 in the disk 25, the concave end portions of which rest respectively in the countersunk portions of the pair of orifices 80 in the respective faces 80 and 80 of the disk 25. The free ends of the two pairs of arms between which the disk 25 of the rotor element K rests, align themselves with a pair of orifices 81 in the disk the concave end portions of which rest respectively in the countersunk portions of the pair of engaged orifices 81 in the respective faces 81 and S1 of the disk 25. Now when the operating lever 37 of the rotor element K is rotated to move the disk 59 uponnhich the wipers (34, 65, 0 and 67 are secured toone of itsoper-ative positions, to engage certain contacts 6, 7 etc. inthe base 2 the disk 25 will also rotate which moves the pair'of orifices 80 in which the free ends of the .pairsof arms 26, 'and 27, 31 were resting, away from these 1 free; ends, causing them to ride uponthepon,

tion of the faces and 80? of thedisk 25 betweenthe orifices80 thus forcing them apart to place-them under further tension and as the next pair of-orifices80 advance toward these free ends of the pairs of arms, theconcave end portions .ofthe arms will start to enter the.

next-pair of; orifices 80 in -t he. disk ,25 and whenthe crowns of the concave portion of the,

free endsof the pairs ofarms pass the edge of thecountersink around the orifices 80 in the respective faces 80: and 80 ofthe disk 25, the tension of the arms will produce a snap action caused by the free ends of the pairsof arms entering the countersink of the nextpair of orifices 80 under the influence of the tension of the arms, The rotorelement K will now beheld in its adjusted position by the free ends of the'arms 26 and 30, and 27 and 31' resting in the orifices 80, and from the above description the rotation of the actuating lever.

37-01 the switch unit K will cause the pairs of arms 28 and 32 and 29 and 33 associated with the switch unit K to cooperate with-the disk 25 to produce this snap-action when moving this rotor element K from one position to the other. 7

To limit the degree of rotation of the rotor element K when moved to its off or posi-v tion A and its extreme advanced, position D a tongue integrally formed with the cas 25 is provided wit-h a reduced peripheral portion 86 in its circumferential edge which portion 86 forms shoulders 87 and 88 which engagerespectively the tongue 85-when in its off position A and in its position D to limit the movement of the rotor element K in these directions. qThe degree of movement of the rotor element K is also limited by a tongue 89 struck up from the casing member 22 and shoulders 90 and 91 formed by a reduced peripheral portion 92 ofthe circumferential edge of the disk 25 engage respectively the tongue 89 when the rotor element K is in its off position E or its advanced position F.

The rotor element K is adapted to be locked in its off position A and its first two operative positions B and C but cannot be lockcdin its third position D. and the rotor element K is also adapted to be locked in mg member 22 extends upward. The'diskits oft position E but cannot be locked in its on or ignition position F. To accomplish this I provide aslidinglock plate 95 resting'against thebottom of the enclosing casing 22 and which lockplate 95 is provided with a bifurcated-upper portion 96 which bifurcation is of asize to receive the lug 7 8 integrally formed in the bottom of the cars-- ing 22. Theslidinglockplate 95 isalso pro- VldQClwith a lo'wer bifureated portion 97 which bifurcation is also; of a; size to receive thelug 79 which is integrally formedin the bottom'otthe casing,22. .Thesatwo lugs 7 8, and 7,9 Whichare in verticalalignment serve id ;0 "'g d, ng 5 1 loc plates .95 n its vertical; gnovenient in v itsi-travet fromja o k d to: u l ck p i n, Q :.Zi Q Y $.fl-' The bridge 98 of; the-plate 95-;between the w rc i s. Wan 981 r stsrbe we n t wo g .5 8 a dF-Q an in; c operatio Wi he' l gs'. 78.;39179 l mit the-move e o he: iding-doc pla eini sl oskeder unlocked posi nz si lb moreiiullyiher i afie r def scribed t -.'I hex lockplate .95 is,.-also provided i PaL EQf 'a ge i xt n o s 1 va 0 ntegra yo xed i h tpl 9 the. x n io :9 :;.C0QP1 Dg.--W h o h 102, and 103 in the peripheral 1 edge. of the disk 25, of the rotor element K to lock-{it-only in its oifi-position A and its operative positions B and C and the angular extensioncooperates ,with' a vnotehl04 in ,thefperiphreal edge of thedisk. 25f of the. rotor elementK to lock'the; same in'only its oif-.pfosition E as will presentlybe described. g

' A tumbler ilockT is associated with the sliding lockplate-QS .and supported in,the casing ,22; by means of a tongue p'rojection 105 which is struck up from the bottom of the casing22'and which. tongue 105 extends up in a-bi'furcatedextension 106 integrally formed with the barrel 107 of the lock T to prevent'the lockas a whole-.from-turning when the :keyjs inserted into thexcylinder 108 of the lock. The cylinder 108 extends forward through suitable aligned orificesin the casing22 plate 20 and escutcheon 21 to the front face of-theswitch. The sliding lock plate 95 isprovided with 2. depending hook member 109 which cooperates witha pin 110 secured tothe forward end of the cylinder 108 of the lock T and assuming that the key is turned to'lock thelunits Kand K,

tensions -99fa'ndof the plate 95 to enter the slots-101 and104 in the respective disks 25and 25 of the rotor element's K and K and; when the bridge 98 of the lock plate 95 engages the lu 78- further movement ofthe lock filate tlti is prevented which in turn will revent further rotation of the cylinder 108 and pin of-the lock T in this direction, apjdthe key now in such position so as to permit its-removal from the cylinder 108- of the lock '1; 'When the lock plate 95 is in this positiona's clearlyillustratedin Fig. 9 with its-extensions 99 and 100- extendin'g'into the slotis-"ml and- 104jin the respective disks 25 and 25o f-*the-rot0r element-s Kand K- the saidelements -K"a' ndK'- are locked intheir om-positions A- and E. To unlock the rotor;

eleiznentsK-and Kf the cylinder 1080f the lock '1? is rotated in a counter clockwise diieti n" through theagency of; the key u ntil the pi'n =1'10in"the cylinder engages the edge 1 12ofthe hook'exten'sion 109 'ofthe lock-plate 95 and' further rotation nowcaused the lock plate '95to bemoveddown causing its angular eXtensions 99- and1OO to be withdrawn from the slbts1 O1and 104 in the disks 25 and 25" of the' respective rotor elements ligand K" and when; ridg'e'98of-th'e lock plate 95 engages thelug 79 -fprther movement of the key; is-pre'vented; and the key may bewith;

"From theabove description itjmay be seen that the ignition switch unitM'ca-n only be lock'e'cldn its ofifposition E and the lighting switch unit L can only be locked-in its off positionAand'itspositionsBand C-and should an attempt'bemade'to lock theunits L and M-When the unitL is in itsposition Dand the iiriit M in its off position E the extension QQof-the lock plat-e 95 will-engage the pe ripl i e'ral'edge of the disk 25 and prevent a complete rotation of the key in cylinder 108 andprevent'the key from being" withdrawn. Should-the attempt-be made to lock the units L andM when the unit-L is in its oil position A and the unit 'M- is in its ignition or position F-the extension 100-ofthe plate 9;") will engage the peripheral edge of the disk 25-61mm iinit M and'prevent a complete rotation Of'tlIQ key and cylinder 1138 and thus prevent-the key from being withdrawn so that; the operator is provided with a. positive check-so thatin order to lock the units L and 1W theun'it L-inust be in any of its positions A,"B or C,- and' theunit=M.;must-always be in its"off wpositi0n E. It is also readily apparent that the rinit'L may be locked in any of' its positions A, 13-01 C the slots 101, 102 and'103 are provided in the disk 25 of this unit-L'for this purpose, but it is also readil apparent from tlie foregoing description that the unit Miymust be in its off position E to permit the; unit L to be locked in its oif position A- and its positions B and C. To holdthe sliding lock plate 95 in either of its suitable slot 13 in the base 2 and extends approximately parallel with the base 2-its free end being just above the contact 121; in the base. 2 but not in engagement therewith and which leaf springlQO-through the agency of suitable actuatingmechanismmay b'e moved into engagement with the contact 121. Thecontact 121- isjseeured-i'n the base 2 in the same manner as described in connection with contacts 3"and 4'- etc. and it is also provided.

with a terminal 122 and as a detailed=description has alreadybeen given of the contacts 3, 4 etc. a further description is not thoughtneccssary. A shaft 125 rotatably supported in an aligned orifice in the esci1 tel1eon 21', plate 20 andcasing 22- extends into the oasing 22 anda tripod 126 which is securedto the bottom of the casing 22 by suitablemeansis provided-with a central orifice 127into which theshaft 125 extendsand \vl1ich;o1 if ice127 serves as a guide for the shaft 125 disk 128 secured-to an intermediate"enlarged portion of the shaft 125 by-a suitable 'spimiing operation rests between the tripod 126 and the bottom of the casing 22 and a spiral spring 129 around the shaft 12 5-bet;ween thetripod 126 and thedisk 128 maintains '-the cowl button shaft-125-in its normal-position as illustrated in'the drawihgs= The-disk 128 is provided with an angular hooked member 130 integrally formed with the disk-128 which cooperates with a ridge 131 in' the face of permits only alimited movement'- of the shaft- 125 and its supported'disk 128 in that'dire'ction. The shaft 125 has secured to=it inauysuitable manner an insulation button 134 which engages the leaf spring when depressed causing the free end of the leaf spring 120 to engage the contact 121 in the base 2 to close the cowl light circuit. The limiting of this movement of the shaft by the stop projection 133 on the disk 128 prevents unduepressure being placed upon this leaf Spring to prevent the spring 120 from being flexed to such an extent that its free end will not contact with its associated contact 121 in the base 2. Now to maintain the shaft 125 of the cowl unit CL in its actuated position, to maintain the spring 120 in engagement with the cont-act 121, the button 132 secured to the shaft 125 is turned or rotated in a counterclocltwisc direction with reference to Fi g. 1 to bring the hooked projection of the disk 128 into engagement with the ridge 131 of the tripod 126 to lock the shaft 125 in its depressed position, and this hook 130 in assoeiation with the'ridge 131 maintains it in this position against the jarring of the machine. To restore the cowl light unit CL and permit the free end of the spring 120 to disengage. the contact 121, the button -l32-is rotated in a clockwise direction until the hooked proj ection 130 of the disk 128 has disengaged the ridge 131 on the tripod 126 andwhen in this position the combined tension of the spring 129 aroundthe shaft 125 and the flexed spring 120 forces the shaft 125 upward causing the button 134 in the end of the shaft 125 to disengage the spring 120 permitting. the spring 120 to disengage the contact 121.

The plate2t) andcup shaped enclosing member 22 are secured by means of studs 135 -and the fourstuds '135which secure the enclosing casing 22 and theplate 20. t ogether also provide means for seeuringrthe base 2 to the enclnsing casing; 22 andasthemethod of securing the platef20 and casing 22by means of these studs 135 is alikelt he description of through which the one will suflice -Tl ie..s t ud .135: is provided with'a flat lie M1 136; which rests in the counrs k the. Pla e @ZQ-smQ. e end h gh. an orifice. 138=in this countersink 137. The stud 135 is provided with intermediate enlarged portion 139 which. gproyided with wing members diametrically opposite. The bottom of the casing22 is provided witha s 141 which s..r d aw t i eie fiee I d-. 3 end an l s 143 in the orifice register with the wing men) has and permit the .wings. 140 to protrude through said slots 143 as elearlylillustrated in Fig. 15. The countersink 13'? inwhich the head 13.6 a s lt-l'e re tse iefi P ni f theboss 140 in'the casing 22 and thezstud 135 and part's'ingpositionasjustdescribed, a; suitable tool is placed over the stud: 135 and by means ofa suitable riveting operation the protruding wings 140 are upset. The riveting operation as applied also causes the head 136 of the stud 135 to be spread, to thus secure the stud 135.1"igidly in position against lateral movement, and the wingmembers 14-0 which were upsetin the slots 143 in the orifice prevent the stud 135 from turningand the upset head 136 of the stud 135 thus rivets the plate 20 and enclosing casing- 22 together. The cscutcheon 21 is secured to the plate 20 and its casing 2 by means of the ferrules 23 as before described to form a unit enclosing structure. i

The studs 135 extend rearwardly into the casing 22 and the base 2 is provide with 0riiices 145 which-register with the studs 135 which pass therethrough and permit the base 2 to rest against the peripheral edge of the casing 22. A pair of orifices 116 and 147 are adapted to receive the ends of the lever shaft 38 and 38 and serve as bearings for the shafts 3S and 38' when the rotor elements K and K are rotated. An orilice 118 in the base plate 2 pounds the end of the cylinder 108 of the lock T to restherein. Nuts 149 having screw threaded engagement with the ends of the studs 135 protruding through the orifices 145 in the base 2 are turned down to clamp the base 2 against the edge of the easing 22. lVith the base 2 thus secured in position the tumbler lock T is clamped in position between the bottom of the enclosing casing 22 and the base 2 against lateral movementand the tongue 105 in association with the bifurcated end 106 prevents rotation of the lock T, and the operating levers 37 and 37 of the rotor elements K and K are rotatable in the bearings formed by the ferrules ..3 and the orificeslfiG and 147 in the base 2.

The contactsfi, 7, etc. of the rotor element K are now in position to be enga ed by the wiper. arms 6 1, 65, 66 anti 67 on tne disk 59 supported on the lever shaft 38 of the rotor element K-when the same is rotated through the agency of the lever 37, and the contacts 3, 4. etc'. of the rotor. element K are also in positionto be engaged by the wiper arms 70, 71,.72 and 73 on the disk 60 supported on the lever shaft 38' of the rotor element K when the same is rotated through the agency of the lever 37: The actuating levers 37 and 37' of the rotor elements K and K :wh en rotated to. their different positions cause'the wiper arms of; therespectiveekments K and K to engage certain combinations. of conta cts in the :hase2 to close the circuits of the different lights of an automobileand the ignition systems ofthe engine as is \velltmderstood.

As illustrated in Fig. 30f the drawing I show fuse clips 150 and .151 secured respectivelyto the terminals" 16 and. 18 by means. of so table' screws which have screw threaded.

engagement.- with suitable tapped orifices l5 in thesaid terminals. A suitable fuse'152 is inserted in the clips 150. andl51and the leaf spring 120 which is associated with the con- -tact 121 of the cowl light unit CL extends through a slotted orifice 13 in the base 2 and this extended portion is provided with a tongue extension 153 which is secured to the terminal 18. The terminal 16 to which the fuse clip 150 is secured is the terminal to which the external battery lead is secured and through the agency of the fuse 152 battery is extended to the terminal 18 1 illof the lighting switch unit L so that battery which is extended to the different light circuits due to the manipulation of the-switch lever 37 passes through the fuse for the usual protective purposes. The battery circuit to the cowl light uni-t CL also passes through the fuse 152 to the terminal 18 to which the leaf spring 120 of the cowl light unit CL is secured.

An overload relay OR of any suitable type may be substituted by the removal of thet'use clips 150'and 151 by connecting the terminals of the relay OR to the terminals 16 and 18 all of which is clearly illustrated in Figs. 10'

and 11 of the accompanying drawings. The

relay OR when substituted in place of the fuse 152 serves the same purpose but instead of opening the battery circuit should; an abnormal current fiow through'the relay OR occur it will vibrate and give the operator a signal.

A horn button unit H13 may be substituted for the cowl light unit CL and comprises an inverted cup shaped member 160 which is provided with depending prongs 161 which are inserted in aligned slottedorifices in the escutcheon 21, plate 20 and enclosing casing 22 and the protruding ends: are clinched over to secure the member 160 in position. The button 162 ofthe unit isprovided with a square stem 163 which is" inserted in asquare orifice 164 in the closed end of the member 160, and an actuating rod'165'secured to the square stem 163' extends through an aligned orifice in the escutcheon 21'-,' 'pl'ate 20,

and' enclosingcasing 22. A coil-spring 166- around the rod 165 r'ests between the square stem 163 1of the button l6 2'zand the escutcheon 21 and maintains-the button 162 in its normal position. The end of the aetuatin'grod 165 which extends into the-enclosing casing 22 is provided an insulation-button-167 secured. to it irr-any suitable manner and which isadapted t'o engage-the leaf spri'ng120; A;

wing l 68 formed on the'protruding'po'rtionto cause the insulation-button 167 to engage the leafsp'ring 120 and move it'into engage ment with the contact 121 to close the circuit of the horn so that the leaf spring 120 will be not flexed out of shape. The square stem of the button 163 moving in the square orifice 16 1. of the member 160 prevents turning of the button 162 and also serves as guiding means for the button 162. The tongue eX- tension 1530f the leaf spring 120 when used in connection with a horn button unit HE is disconnected from the terminal 18 and connected to the terminal 16 so that when the c rcuit of the horn is cioscd battery will flow direct through the spring 120 and contact 121 to the born without passing throu h the protective device. i D

The lighting and ignition switch as a whole is adapted to be mounted in the cowl of the automobile and to this end the cowl of the automobile is provided with an oritice 180 inwhich the body of the switch rests and a tongue extension 181 integrally-formed with the plate 2O regist'ers with a notch 182 in the orifice 180 of the cowl as illustrated in dotted lines in Big. 2 to prevent the same from turning in the orifice 1-80 in the cowl. A bracket 183' provided with a pair of orificesregisters with the studs 135 which pro trade through the base 2 of the switch and which studs 135pass through the orifices and nuts 149 having screw threadedengagement with the studs 135 clampthe bracket 183 in position with the leg extensions 18% of the bracket 1'83 engaging the rear face of the cowl thus clamping the switch as a wholein the cowl opening against movement. Spring members 185 are also secured to the bottom of the bracket 183 for holding additional fuses 152 forreserve use.

Y'Vhile I have described and illustrated a preferred embodiment of my invention it is to be understood that I do not wish to be limited to the exact structure as shown and described but aimto cover all 's'uch changes and modifications which may come within thejspirit and-scope of'th'e appended cl'iii'msi Having describe'clrmy invention what I claim as new and desire to secure byUnited States Letters Patent is:

' 1. A'switch of the character described including a front plate and a ba'clcplate, a pair of'rotata-ble' elements mounted'between said plates, operating levers for said' elements, a shaft for each of said levers extending through said front plate, said elements and said back plate, said shafts each having a pair of lugs, and means intermediate of the ends of said shafts including cup-shaped members adapted to engage said pair of lugs for' detachably locking said' shaft-s against longitudinal movement.

2. A switch of the character described'ineluding a front plate and aba'se, a pair of rotatable elements mounted between said a lock member comprising acup shaped member cooperating with the said diametrically opposed lugs intermediate of the ends of said shafts to prevent longitudinal movement of said levers.

3. A switch of the characterdescribed including a front plate and a base, a pair of rotatable circuit controlling elements supported between said plate-and base, operating levers for said controlling elements, shafts for said actuating levels each having a pair of integrallyformed diametrically opposed lugs and extending through said front plate, said controlling elements and said base, a-locking member comprising a cup shaped. member cooperating with said diametrically opposed lugs 'intermediate of the ends of 'said shafts to prevent longitudinalmovement of said levers,- and circuit closingmembers-for said elements'supported on a said shafts. i

v 4.- A switch of the character described in cluding a front plateand a base, a pairof rotatable-circuit controller elements supported between said plate andbase,'contacts in said base associatedwwith said controller.

elements, operating levers for 'saidcelements and a shaft for each ofjsaid'lever s extending throughsaid front plate,-said elements and said base, integrally formed diametrically" opposed lugs 1 for E each 0f said I shafts, and

'means intermediate of'the ends of said shafts including a cup shaped member adapted to cooperate' with ;said lugs forlocking saidshafts against longitudinal movementi 5. A switch ofj thech'aracterdescribed including a frontyplate' 'a'nd' a; base, ;a pair of rotatable circuit "controller eleme ts supported between said plate and base, contacts in said base associated with said "controller ele-= merits," o erating 1ever=for sai'd elements', a shaft for each offs'aid levershaving-apair of integrally formed diametrically opposed lugs and extending through said frontplate,

' said elements andsaid basga locki member means holding: the levers in: adjustable e; 'A switch (it he 'chara'c'terdescribed including m at elatea ia'b it-air o f tatable circuit controller elerne'nts supported comprising a cup-shaped,meinbercoop'erating with sai'd diametrically opposed 1ntelmediate of "tl e nd's' of said "shafts" to pre vent lon itudiii'a'l movement bffsa'id levers,

and memdiers secured to said shaft s' formin g between said plate and base,'coiitaets inv said base associated with's'aid controller elements, operating levers for saidelements, ashaft for each ofsaid levers'havinga pair of integrally formed diametrically o posed lugs and ex-,

, of said shat ea ingw. "ehSa d reat l te e andfsa db s rneiins', intermediate of the ends lugs for lockingsaid shafts againstlongitm dinal movement, and c rcuitclosing members supported on said shafts for engaging sa: (1.

a ur ing'a l iii 'aiid me dapted to e gage the j 'tgral y'jf contacts in said base, said circuit controlling elements being held in position by spring means. i

7. A switch of the characterdescribed including a front plate and a base, a pair of rotatable circuit controller elements supported between said plate and base, contacts in said base associated with said controller elements, operating levers for said elements, a shaft for each of said levers extending through said front plate, said elements and said base, a lock member comprising a cupshaped member cooperating with means including a pair of diametrically opposed lugs intermediate of the ends of said shafts to prevent longitudinal movement of I said -.levers,- spring means adapted to maintain said cup-shaped member in cooperation with said lugs, and for preventing any unauthorized rotation of said shaft, and circuit closing members supported on said shafts to engage ,thecontacts by movement of said actuating base, one for each of said rotor elements, operating levers for each of said elements, a

shaft for each of said levers extending through said plate, said rotatable elements and said base, a lock member associated with means on said shafts for preventing longitudinal movement of said shafts, spring means adapted to maintain said lock member in association with said means on said shaft and for preventing any unauthorized rotation of :said shaft, circuit closing members for each of saidelements supported on said shafts for engaging its associated group'of contacts in "said base, and a slidable plate provided with -:integrally formed lugs cooperating -with notches in said pairof rotor elements.

9. A switch of the character described including a front plate and base, a pairof rotatable" elements supported between said plate and base, two groups of contacts'in said base; one for each ofsaid rotatable elements.

anoperating lever for each of said rotatable elements extending through said plate, said elements=andsaid base, a'lock' member and -lugs'on said operating leverscooperatingw'ith said lock member'to lock'said levers against longitudinal movement, spring means'adapted to maintain said lock member in cooperation with said lugs and to prevent unauthorized rotation of said shaft. and'circuit closing members supported on said levers-associated w th its respective group of contacts ad apted to engage said contact group by movement of said actuating levers.

.10. A switch-of the character described including a front plateand a base, a pair of rotor-elements, .eaelishaving a plinu'tity of operative portions supported between said plate and base, operating levers for said rotor elements, cup-shaped members adapted to engage pairs of lugs integrally formedon said faces insaid disks to, maintain saidrotorielements in any ot' theirroperativeposiaions and to maintain said cup-shaped member in .env gagement. withsaid lugs.

eluding a front-plateandazbase, av paiigot 11. A switch of the charaeterdeseribed inrotor elements-each having a-inorpaal andan operative position, saidrotor: zelenientsibein g rating levers forszuidelebients :for moving said lotortelements to; any oftherr operative .po=

supported between-said plate and base,-.o.per-

Sitions, integrally formed diametrically opposed lngsfor/said-levers, Lenp shaped members adaptedjtouengage said lugs ,to prevent longitudinal i movement of the .levers, a disk. associated-ninth each rotor element, a. pair of 1 l; l members. secnredlto said front plate,

I spring, arms-amending: fronisaidme-mbers, a

p rality; otioriitiees in said diskgsiid spring r:gage withsaidlngs. i

l Artswiteh of the character: described .in-'

' arms engaging, orificesiin ;the respective faces of; S3 Mia-disks- ;to maintain sa 1d: rotor; elements 1 thelrnor-mal 0riopemtivepositions. and to maintain i QidLCHJP'QQ PQdQXIiQmbQiS .in a tenelud ng arafmntplat'et and-fa basaa pair-of i ii 'lm vlllelllbp i adapt .ito prevent: ilongitudinal tnmvementiof said R y'a'iKlQ F k. -associated? wit li,.-eac=lr imtor .ele-

on-O retire osition-zo eratin lev ers rev-r W p p g i gi ili gsa-eii tmws inaeaa ee mi W 0.

ing a, pail-nitiinizegrallygiformedi diametrically opposed lugs ionisaid ggtorgedements, a. cupi itorengage said lugs ment,-a pair of plate'menrbensi secured to said front-plate pnovideld Withextending spring arms, alplnrality oi onifiees said dislggsaid lsp ng ,=ai :ms ngagip orifieesmqthe im ec- Y fates; iof saldadislirs a group of contaets for each; rotor element :i-nisaiicl .base,. and

wiper elements associated.- with each actuating leyjer to be moved into [engagement with said contact; groups, saidusprin g, armsmain- ;t a ii i;ng-;the wiperelbmentsaofrsaid rotor. elements in. 'tl-i'ei'rl adjusted positions and mainng; isaideup shaped mernheltin engageuincl'udiiig airont pla te and a' base,-rotor elenentwitih-isaid .lugsw 13;; In a.switiehiof/theeharactei: described merits provided with actuating levers having integrally formed diametrically opposed said diametrically opposed lugs on said levers for izota-tabi'y securin said actuating levers to said front piate/soathat said wiper iuernbers a re in operative association with said groups ol'contaets, said rotor elements adapted tovbe moved to dillerent positions by said ,levers, and a plate provided with integrally formed lugs cooperating with notches in said pair of .rotor elements.

I 14. A switch oi thecharacter described in- .cluding a front plate and a base, a pair of rotorelementseach having a normal and-an operative position, said/rotor elements :being supported betweenvsaid front plate andzbase, v operating leversfor said elements for-moving said .ro tor elements to-theiimoperative .positions, a.euplshaped,member having a pair of notches, diametrically. opposed liigs on sai d operating levers, the notches in saidmembers adapted to engage the said .lugs lopremnt longitudinal.movement. of said. levers, adisk ,associated.;wit-hfeachrotor element, a pair 7 of plate members secured to said front plate, spring-arms extending:.fromsaid members, a plurality of orificestin said disks, said spring arms. en gaging orificesjnlthe respective .faces ,of said disks to -1I1LlIllZf1lI1pSllCl rotor {elements in their normaLor. operatiyepositions, and a tmember provided with uintegmlly .iqr ned rotor elements.

15: In. a switch of tbe-fihanaeterflesoribed including a itront. plate ande base ai otin' is "me i i-mennte =.betwe ni[se p ate an 8 l s tie -la kin aid a a n 7 i9 --eitusli 1 ma man- I i a e iiiwit h: ZQI Wh WQQBli fiQ ll i st llin -stree ipliiteead ba s. ot e eme m w ihe we e sa pla e ii i e 9 3 L i sii ealei -s i i l ii t is 1 for said lever expending ,thropgh sai d rent ala e. a e wiienti i =iid lee o said shaft, ap p membereprovided with a notch which registers with saiitllug' -nreans in; filildpup and .tqn said lug ior locking said lever agajnst lqngitnglinal movement, and e means" .foi' ,holding said qup nen'rber ain t locked position i 1 z p all ten et h f th .eh ra ssd ri el =-.--t e liiili trea ,nliit remlialvaeel rd QlQ JW-E QDIKEQ,b9- 3 l plateand base, ga aoll lfi ll g larg r, for: sa cl'el liieptg, ash-af i ix -r e ten fi f throu h ai aid 'rotorfeleinentj sla d bafi a, 1 sai ev r shaft; 8 oiipm mb PIPE-di w t wo c Wh sk reg sters with: said leg, a rib on s i Ireland-chin 5W1. GNP Fl sh r ceives saidrib to lock said leveragainstlom v,q"ifi l inal movement, and. spring: means for "holding said cup member'iii'loclied position.

ugs ,coop rating wi hnot-chesiiu-said pair f an op rating lever -f '=ad i dema d a. sh ath,

18. .In a switch of the character described including a. front plate and a base, a rotor element mounted between said plate and base, an operating lever for said element, a shaft for said lever extending through said front plate, said rotor element, and said base, :1 lug on said lever shaft, a cup member provided with a central orifice and a notch which registers with said lug, a rib on said lug, and a notch in said cup at right angles to the notch which registers with said lug and which receives said rib to lock said lever against longitudinal movement, and spring means for holding said cap member in locked position.

19. A switch of the character described including a front plate and a back plate, a pair of rotatable elements mounted between said plates, operating levers for said elements, a shaft for each of said levers extending through said front plate, said elements and said back plate, and means intermediate of the ends of said shafts for detachably locking said shafts against-longitudinal movement, said means including integrally formed diametrically opposed lugs having a ridge on one of their faces on said shafts adapted to fit into notches provided in the members on said rotatable elements.

20. A switch of the character described including a front plate and a back plate, a pair of rotatable elements mounted between said plates, operating levers for said elements, a shaft for each of said levers extending through said front plate, said elements and said back plate, means intermediate of the ends of said shafts for detachably locking said shafts against longitudinal movement, said means including members on said shafts adapted to fit into the members on said rotatable elements, and a spring for holding said rotatable elements in their adjusted positions and for holding the members on said shafts in engagement with said rotatable elements.

21. A switch of the character described including a front plate and a base, a pair of rotatable circuit controller elements supported between said plate and base, contacts in said base associated with said controller elements, operating levers for said elements, a shaft for each of said levers extending through said front plate, said elements and said base, means intermediate of the ends of said shafts including diametrically opposed lugs, formed integrally with said shafts, adapted to cooperate with notches in a cup-shaped member for locking said shafts against longitudinal movement, and spring means cooperating with members detachably secured to said shafts for maintaining said levers in their adjusted positions.

22. A switch of the character described including a front plate, a rotary element, a shaft extending through said front plate and said rotary element, locking means between said rotary element and said shaft including a projection and a notch for preventing rotation between said shaft and rotary element, a cup-shaped member having notches adapted to be engaged by said projection to prevent longitudinal movement of said shaft, and spring means for holding said projection in said notches.

23. A switch of the character described including a casing including a disk provided with depressions, a lever for rotating said disk, and a pair of springs havin free-ends extending into said depressions vfor holding said rotary element in adjusted position.

24. A switch of the character described including a casing, a lever provided with a shaft extending into said casing, means associated with said shaft including a disk provided with depressions and a pair of springs having free ends extending into said depres sions for maintaining the said shaft in adjusted position, and a rotatable contact member fitting onto said shaft and adapted to be rotated thereby.

25. A switch of the character described including a casing, a lever provided with a shaft extending into said casing, means associated with said shaft including a disk provided with depressions and a pair of springs having free ends extending into said depressions for maintaining the said shaft in adjusted po sition, and a rotatable member fitting onto said shaft and adapted to be rotated thereby, a spring contact member secured to said rotatable member.

26. A switch of the character described including a casing, an operating member extending into said casing having a pair of integrally formed diametrically opposed projections, a rotatable disk provided with notches adapted to be engaged by said projections and thereby rotatably secured to said operating member by means of the said notches and projections, a contact spring provided with integrally formed members fitting into notches in said disk, and stationary contacts adapted to be engaged by said contact member.

27. A switch of the character described including a casing, an operating member extending into said casing having a pair of integrally formed diametrically opposed projections, a rotatable disk provided with notches adapted to be engaged by said projections and thereby rotatably secured to said operating member by means of the said notches and projections, a contact spring provided with integrally formed members fitting into notches in said disk, and stationary con tacts adapted to be engaged by said contact spring, said spring contact member forming the means for holding said spring contact member in engagement with said disk.

28. A switch of the character described including a. front plate, an operating member extending through said plate, a member secured to said plate having an orificendapted toreceive-said operat ng member, and LL- hook upon Silld-OPGf-iltlhg member adapted to en gage said first member to preventithesuid ,op-

provided with bi 16k plate, terminals extend-- ingithrough said back plate; a, stationary contact-and zrspring-oontact, said contacts adapt;-

ed to be locked in operative position or to be automatically rcturned to 1101111111-pOSiti()Il, 2LI1 extension iorsuid spring Contact extending through said back plziteiiuid adapted to, be

connected to either one orthezothcr of zrpuir of said terminals extendingrtluough said back plate.

Signed by me at Chicago, imthe county of Cook and State of Iilinois, this 24th day of November, 1924.

ERNEST A. BO-HLMAN. 

